20748546

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1$

素因数の和:320

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 35860734

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 53, 63, 78, 91, 106, 117, 126, 159, 182, 234, 239, 273, 318, 371, 477, 478, 546, 689, 717, 742, 819, 954, 1113, 1378, 1434, 1638, 1673, 2067, 2151, 2226, 3107, 3339, 3346, 4134, 4302, 4823, 5019, 6201, 6214, 6678, 9321, 9646, 10038, 12402, 12667, 14469, 15057, 18642, 21749, 25334, 27963, 28938, 30114, 38001, 43407, 43498, 55926, 65247, 76002, 86814, 88669, 114003, 130494, 164671, 177338, 195741, 228006, 266007, 329342, 391482, 494013, 532014, 798021, 988026, 1152697, 1482039, 1596042, 2305394, 2964078, 3458091, 6916182, 10374273, 20748546]

約数ペア:

[(1, 20748546), (2, 10374273), (3, 6916182), (6, 3458091), (7, 2964078), (9, 2305394), (13, 1596042), (14, 1482039), (18, 1152697), (21, 988026), (26, 798021), (39, 532014), (42, 494013), (53, 391482), (63, 329342), (78, 266007), (91, 228006), (106, 195741), (117, 177338), (126, 164671), (159, 130494), (182, 114003), (234, 88669), (239, 86814), (273, 76002), (318, 65247), (371, 55926), (477, 43498), (478, 43407), (546, 38001), (689, 30114), (717, 28938), (742, 27963), (819, 25334), (954, 21749), (1113, 18642), (1378, 15057), (1434, 14469), (1638, 12667), (1673, 12402), (2067, 10038), (2151, 9646), (2226, 9321), (3107, 6678), (3339, 6214), (3346, 6201), (4134, 5019), (4302, 4823)]